Helmed Horror

AC 20

HP 67 (9d8 + 27)

Speed 30 ft., fly 30 ft. (hover), (hover)

Skills Perception +4

Immunities Necrotic; Poison

Condition Immunities Blinded, Charmed, Deafened, Exhaustion, Frightened, Paralyzed, Petrified, Poisoned, Stunned

Senses Blindsight 60 ft., Passive Perception 14

Languages understands Common plus one other language but can't speak

CR 4

Traits

Magic Resistance. The helmed horror has Advantage on saving throws against spells and other magical effects.

Spell Immunity. The helmed horror is immune to three spells chosen by its creator. Typical choices include Heat Metal, Lightning Bolt, and Magic Missile.

Actions

Multiattack. The helmed horror makes two Arcane Sword attacks.

Arcane Sword. Melee Attack Roll: +6, reach 5 ft. Hit: 8 (1d8 + 4) Slashing damage plus 5 (1d10) Force damage.